The R1 performance package for the Mercedes 500 series engine includes our proprietary ECU upgrade in addition to our full carbon fiber airbox upgrade which offers a larger volume of incoming air for better engine breathing and improved cylinder filling.

This combination that provides noticeable increases horsepower, torque and throttle response across the vehicles entire powerband while still maintaining daily driver reliability.  

R1 Performance Package includes:

• RENNtech ECU Upgrade
• RENNtech Full Carbon Fiber Airbox

CL 500 (C215) Stock Performance:

• 302 HP @ 5600 RPM; 339 LB-FT @ 2700-4250 RPM

Modified Performance:

• 325 HP @ 5600 RPM; 365 LB-FT @ 3000-4600 RPM